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Improve support for CYGWIN #3928

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244c84e
[MESON] Add support for CYGWIN platform
carlo-bramini Feb 11, 2026
7c4c2db
WIN32: ReleaseSemaphore() needs LONG rather than long.
carlo-bramini Feb 11, 2026
74f2a54
CYGWIN: don't use _alloca() for adding stack space.
carlo-bramini Feb 11, 2026
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5 changes: 4 additions & 1 deletion codec/decoder/core/src/wels_decoder_thread.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -115,7 +115,10 @@ int SemWait (SWelsDecSemphore* s, int32_t timeout) {
}

void SemRelease (SWelsDecSemphore* s, long* prevcount) {
ReleaseSemaphore (s->h, 1, prevcount);
LONG _prevcount;

ReleaseSemaphore (s->h, 1, &_prevcount);
*prevcount = _prevcount;
}

void SemDestroy (SWelsDecSemphore* s) {
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2 changes: 1 addition & 1 deletion codec/decoder/plus/src/welsDecoderExt.cpp
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Expand Up @@ -90,7 +90,7 @@ namespace WelsDec {
***************************************************************************/
DECLARE_PROCTHREAD (pThrProcInit, p) {
SWelsDecThreadInfo* sThreadInfo = (SWelsDecThreadInfo*)p;
#if defined(WIN32)
#if defined(WIN32) && !defined(__CYGWIN__)
_alloca (WELS_DEC_MAX_THREAD_STACK_SIZE * (sThreadInfo->uiThrNum + 1));
#endif
return sThreadInfo->pThrProcMain (p);
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2 changes: 1 addition & 1 deletion meson.build
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Expand Up @@ -112,7 +112,7 @@ if ['linux', 'freebsd', 'android', 'ios', 'darwin'].contains(system)
if ['ios', 'darwin', 'android'].contains(system)
cpp_lib = '-lc++'
endif
elif system == 'windows'
elif ['windows', 'cygwin'].contains(system)
if cpu_family == 'x86'
asm_format = 'win32'
asm_args += ['-DPREFIX', '-DX86_32']
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